# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ==============================================================================
"""Tests for Keras permute layer."""

import keras
from keras import keras_parameterized
from keras import testing_utils

import tensorflow.compat.v2 as tf


@keras_parameterized.run_all_keras_modes
class PermuteTest(keras_parameterized.TestCase):

  def test_permute(self):
    testing_utils.layer_test(
        keras.layers.Permute, kwargs={'dims': (2, 1)}, input_shape=(3, 2, 4))

  def test_permute_errors_on_invalid_starting_dims_index(self):
    with self.assertRaisesRegex(ValueError, r'Invalid permutation .*dims.*'):
      testing_utils.layer_test(
          keras.layers.Permute,
          kwargs={'dims': (0, 1, 2)},
          input_shape=(3, 2, 4))

  def test_permute_errors_on_invalid_set_of_dims_indices(self):
    with self.assertRaisesRegex(ValueError, r'Invalid permutation .*dims.*'):
      testing_utils.layer_test(
          keras.layers.Permute,
          kwargs={'dims': (1, 4, 2)},
          input_shape=(3, 2, 4))

if __name__ == '__main__':
  tf.test.main()
